90487797 has 4 divisors (see below), whose sum is σ = 120650400. Its totient is φ = 60325196.

The previous prime is 90487763. The next prime is 90487841. The reversal of 90487797 is 79778409.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90487797 - 2⁷ = 90487669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90487717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15081297 + ... + 15081302.

It is an arithmetic number, because the mean of its divisors is an integer number (30162600).

Almost surely, 2^90487797 is an apocalyptic number.

It is an amenable number.

90487797 is a deficient number, since it is larger than the sum of its proper divisors (30162603).

90487797 is a wasteful number, since it uses less digits than its factorization.

90487797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30162602.

The product of its (nonzero) digits is 889056, while the sum is 51.

The square root of 90487797 is about 9512.5073981574. The cubic root of 90487797 is about 448.9486517901.

The spelling of 90487797 in words is "ninety million, four hundred eighty-seven thousand, seven hundred ninety-seven".